Home / 139,638.15-192,702.29-75,976.47

Finding the Fourth Proportional to 139,638.15, 192,702.29 and 75,976.47

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Solution

The fourth proportional to 139,638.15, 192,702.29 and 75,976.47 is: 104,848.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,638.15 : 192,702.29 = 75,976.47 : x
  2. Step 2: Convert to fraction form
    139,638.15/192,702.29 = 75,976.47/x
  3. Step 3: Cross multiply
    139,638.15x = 192,702.29 × 75,976.47
  4. Step 4: Simplify right side
    139,638.15x = 14,640,839,375.23
  5. Step 5: Solve for x
    x = 14,640,839,375.23/139,638.15
  6. Step 6: Final answer
    x = 104,848.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.